#include <u.h>
#include <libc.h>
#include <thread.h>
#include <draw.h>
#include <mouse.h>
#include <keyboard.h>
#include <control.h>

Controlset *cs;
int ctldeletequits = 1;

// write volume
int
wv(int v)
{
	int fd;
	if((fd = open("/dev/volume", OWRITE)) < 0)
		return -1;

	if(fprint(fd, "%d\n", v) < 0){
		close(fd);
		return -1;
	}

	close(fd);
	return 0;
}

void
usage(void)
{
	fprint(2, "usage: %s\n", argv0);
	threadexitsall("usage");
}

void
threadmain(int argc, char *argv[])
{
	char *evs, *tok[4];;
	Channel *ev;
	Control *slider;

	ARGBEGIN{
	default:
		usage();
	}ARGEND

	if(argc != 0)
		usage();

	initdraw(nil, nil, "vol");
	initcontrols();
	cs = newcontrolset(screen, nil, nil, nil);
	slider = createslider(cs, "slider");
	//chanprint(cs->ctl, "slider border 1");
	//chanprint(cs->ctl, "slider vis 8");
	chanprint(cs->ctl, "slider absolute 1");
	chanprint(cs->ctl, "slider max 100");
	chanprint(cs->ctl, "slider value 50");
	chanprint(cs->ctl, "slider clamp low 1");
	chanprint(cs->ctl, "slider clamp high 0");
	wv(50);

	ev = chancreate(sizeof(char*), 1);
	controlwire(slider, "event", ev);
	activate(slider);
	resizecontrolset(cs);

	for(evs = recvp(ev); evs != nil; evs = recvp(ev)){
		// invert slider value
		if(tokenize(evs, tok, nelem(tok)) == 3)
			wv(100 - atoi(tok[2]));
		free(evs);
	}

	threadexitsall(nil);
}

void
resizecontrolset(Controlset*)
{
	Rectangle r;

	if(getwindow(display, Refnone) < 0)
		sysfatal("resize failed: %r");

	r = insetrect(screen->r, 10);
	chanprint(cs->ctl, "slider rect %R\nslider show", r);
}